is bleach episode 166 filler?

Having been protected from Grimmjow Jaegerjaquez's Gran Rey Cero by Ichigo Kurosaki, who has donned his Hollow mask in addition to activating his Bankai, Tensa Zangetsu, a confused and intimidated Orihime Inoue addresses Ichigo, who looks back at her. Upon seeing Orihime terrified by his appearance, Ichigo apologizes for scaring her.

After acknowledging how creepy he must look to her right now, Ichigo promises to end this quickly.